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You searched for: mediatype:movies AND collection:ephemera AND subject:"Steam"
[movies]Steam Shovel
Before occupational health and safety, this is how excavation was done. A steam shovel is digging a tunnel for the SF Muni, c. 1917.
Keywords: steam shovel; digging tunnels; excavation
Downloads: 4,039 2.00 out of 5 stars2.00 out of 5 stars(1 review)
[movies]NASA KSNN - Popcorn - NASA; Langley Research Center
What makes popcorn pop?
Keywords: NASA; KSNN; Heat Energy; Expand; Water; Steam
Downloads: 205
[movies]NASA KSNN - Popcorn - NASA; Langley Research Center
What makes popcorn pop?
Keywords: NASA; KSNN; Heat Energy; Expand; Water; Steam
Downloads: 146
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